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A horizontal composite capillary tube ha...


A horizontal composite capillary tube has a radius `2r` for a length `2L` and radius `r` for a length `L` as shown and is connected to a tank at one end and left free at the other end The tank contains a liquid of coefficient of viscosity `eta`. if a constant pressure difference `P` exist across the ends of the capillary tube, the volume flux through x the capillary tube is

A

`((16)/(17))(piPr^(4))/(8etaL)`

B

`((9)/(8))(piPr^(4))/(8etaL)`

C

`((17)/(16))(piPr^(4))/(8etaL)`

D

`((8)/(9))(piPr)/(8etaL)`

Text Solution

Verified by Experts

The correct Answer is:
D
`Q=(pipr^(4))/(8etal), R_(S)=R_(1)+R_(2)`
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